style: adapted forms to bootstrap #84
fix:Use Datetime-Local Inputs everywhere
style: adapted upcoming_war_details.html to bootstrap #84
style: fixed code style #84
style: adapted upcoming_*_details.html to bootstrap #84
style #84 changed form into a input group
Merge branch 'calendar-bootstrap-adaption' into dev

Conflicts:
	calendar.php
	templates/upcoming_date_details.html
	templates/upcoming_date_edit.html
	templates/upcoming_date_new.html
	templates/upcoming_war_details.html
	templates/upcoming_war_edit.html
	templates/upcoming_war_new.html